Skip to main content

Table 3 Sample size estimations for the HOme-based SElftestiNG (HOSENG) trial

From: The HOSENG trial – Effect of the provision of oral self-testing for absent and refusing individuals during a door-to-door HIV-testing campaign on testing coverage: protocol of a cluster-randomized clinical trial in rural Lesotho

Average village size

Average household size

ICC (village)

ICC (household)

VIF

Total number of clusters

Total sample size

30

2

0.028

0.05

1.04

100

402

30

2

0.028

0.1

1.07

100

413

30

2

0.05

0.05

1.20

100

462

30

2

0.05

0.1

1.34

100

518

30

2

0.1

0.05

2.95

100

1139

30

2

0.1

0.1

4.4

100

1699

30

4

0.028

0.01

1.06

100

410

30

4

0.028

0.05

1.31

100

507

30

4

0.028

0.1

1.62

100

628

30

4

0.028

0.5

4.12

100

1592

30

4

0.05

0.01

1.09

100

420

30

4

0.05

0.05

1.44

100

556

30

4

0.05

0.1

1.88

100

726

30

4

0.05

0.5

5.4

100

2085

30

4

0.1

0.01

1.15

100

442

30

4

0.1

0.05

1.73

100

668

30

4

0.1

0.1

2.46

100

950

30

4

0.1

0.5

8.3

100

3204

  1. ICC intracluster correlation coefficient, VIF variance inflation factor